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