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