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