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