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