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