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