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