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