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