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