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