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