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