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