One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,10)(5,13)(6,8)(9,12)(11,16)(14,15)(17,18,22,24)(19,20,25,27)(21,23,30,32)(26,28,29,31)(33,34,39,36)(35,40,43,37)(38,41,47,44)(42,46,48,45)(1,3,6,12)(2,7,8,9)(4,13,15,11)(5,14,16,10)(19,25)(20,27)(26,29)(28,31)(34,36)(37,40)(41,44)(45,46)(2,8)(3,12)(10,14)(11,13)(17,19)(18,20)(21,26)(22,25)(23,28)(24,27)(29,30)(31,32)(33,35,39,43)(34,40,36,37)(38,42,47,48)(41,46,44,45)(1,3)(2,9)(4,13)(5,14)(6,12)(7,8)(10,16)(11,15)(17,20)(18,19)(21,28)(22,27)(23,26)(24,25)(29,32)(30,31)(33,36,39,34)(35,37,43,40)(38,44,47,41)(42,45,48,46)(1,4)(2,10)(3,13)(5,7)(6,15)(8,14)(9,16)(11,12)(17,19)(18,20)(21,29)(22,25)(23,31)(24,27)(26,30)(28,32)(33,37)(34,35)(36,43)(38,46)(39,40)(41,48)(42,44)(45,47) involution — undirected(1,5,6,16)(2,11,8,13)(3,14,12,10)(4,9,15,7)(17,21)(18,23)(19,26)(20,28)(22,30)(24,32)(25,29)(27,31)(33,38)(34,41)(35,42)(36,44)(37,45)(39,47)(40,46)(43,48)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.