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)(22,38)(25,42)(26,27)(28,41)(30,47)(32,33)(34,35)(36,39)(40,44)(43,45)(46,48) involution — undirected(1,3)(2,6)(4,9)(5,10)(7,12)(8,13)(11,16)(14,15)(17,18)(19,25)(20,24)(21,36)(22,39)(23,28)(26,34)(27,38)(29,45)(30,40)(31,42)(32,44)(33,46)(35,41)(37,48)(43,47) involution — undirected(1,4)(2,7)(3,9)(5,11)(6,12)(8,14)(10,16)(13,15)(17,19,23,33)(18,25,28,46)(20,30,35,47)(21,37,34,31)(22,32,38,29)(24,40,41,43)(26,42,36,48)(27,45,39,44)(2,8)(6,13)(7,14)(12,15)(17,20,22,34,23,35,38,21)(18,26,27,24,28,36,39,41)(19,30,32,31,33,47,29,37)(25,42,45,40,46,48,44,43)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.