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