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