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