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