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