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