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