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