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