One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,9)(3,8,4,14)(5,10,15,13)(6,12,16,11)(17,18,21,24)(19,25,27,22)(20,23,29,32)(26,31,28,30)(33,34)(35,38)(36,37)(39,43)(40,42)(41,47)(44,48)(45,46)(1,3)(2,8)(4,7)(5,12)(6,13)(9,14)(10,16)(11,15)(17,19)(18,22)(20,28)(21,27)(23,31)(24,25)(26,29)(30,32)(33,35)(34,40)(36,44)(37,46)(38,43)(39,42)(41,48)(45,47) involution — undirected(2,9)(3,4)(10,13)(11,12)(17,19,21,27)(18,22,24,25)(20,26,29,28)(23,30,32,31)(33,36,39,47)(34,41,43,37)(35,44,42,45)(38,46,40,48)(1,4,7,3)(2,8,9,14)(5,11,15,12)(6,10,16,13)(17,19)(18,22)(20,26)(21,27)(23,30)(24,25)(28,29)(31,32)(33,36)(34,37)(35,45)(38,46)(39,47)(40,48)(41,43)(42,44)(1,5)(2,10)(3,12)(4,11)(6,14)(7,15)(8,16)(9,13)(17,20)(18,23)(19,26)(21,29)(22,30)(24,32)(25,31)(27,28)(33,37)(34,36)(35,46)(38,45)(39,41)(40,44)(42,48)(43,47) involution — undirected(1,6,7,16)(2,11,9,12)(3,13,4,10)(5,8,15,14)(17,18)(19,22)(20,23)(21,24)(25,27)(26,30)(28,31)(29,32)(33,38)(34,42)(35,43)(36,46)(37,44)(39,40)(41,45)(47,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.