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