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