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