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