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