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