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