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