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