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