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