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