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