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