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